el.snapshot(props, t, x)

The snapshot node is conceptually very similar to el.latch, or sample and hold, except that the value sampled is not propagated as a signal, rather sent as an event through the core event emitter.

Specifically, el.snapshot(t, x) will always propagate the input signal x, but on the rising edge of a pulse train t it will also capture the current value of x and emit an event.

Expected children:

1. The control signal, t, a pulse train
2. The input signal to sample

Example:

core.render(el.snapshot({name: "ss"}, el.train(1), el.cycle(20)));
 
core.on('snapshot', function(e) {
  console.log(e); // { source: "ss", data: 0.1394131 }
});

Props